1987•NANDA and American Nurses Association developed a model to collaborate on nursing diagnosis development and endorsed the development of nursing diagnoses.

•Taxonomy I (The "Orange Book") published, based on the work of the nurse theorists. Dr. Phyllis Kritek, chairperson of the Taxonomy Committee, presented "Taxonomic Trees." Subsequent Taxonomy Committee chairpersons included Dr. Joyce Fitzpatrick and Dr. Kay Avant.